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Compared with traditional transportation focusing on how to minimize the transportation cost, hazardous chemicals transportation also needs to pay attention to how to minimize transportation risk. As the cost of risk is uncontrollable, it is urgent for people to consider the transportation strategy based on optimizing cost of risk. Based on the model of population exposure as well as the two factors of accident consequence and population density, the article has established the evaluation model on hazardous chemicals transportation risk. In order to minimize the cost of transportation, we shows an optimization algorithm based on Dijkstra algorithm to solve the risk-cost of hazardous chemicals transportation, from which we found that supervisor could decrease the transportation risk by setting corporate unit transportation risk-cost. Therefore, it has been proved that the model and solution algorithm are correct through the example. |
